JPH0729573B2 - Locking device for vehicle seat slides - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a seat, such as an automobile, whose translational movement is adjustable, and more particularly to a front seat for an automobile having two doors.

PRIOR ART In fact, in these front seats, the device for adjusting the translational movement is used to allow the user to place the seat at the desired distance from the dash board and to guarantee the comfort of the user. Not only is it used to increase the space available at the rear of the vehicle after the backrest has been pivoted downwards.

The fact that the seat must be readjusted each time it leaves the seat to allow access to the rear of the vehicle
For example, it is extremely inconvenient for the driver of the vehicle. It has been proposed to provide a device for acting as a memory and for locating the position of the seat on the sheet guiding slide adjacent to the locking device which allows the slide to be locked in the desired position. However, known positioning devices are generally complicated and add to the locking device outside the slide such that the assembly is large and often has prohibitive dimensions.

SUMMARY OF THE INVENTION It is an object of the invention to provide a device by which the seat can be both fixed in its adjusted position and repositioned after a temporary displacement. Overcoming the shortcomings.

Accordingly, the present invention comprises a generally U-shaped outer element that at least partially surrounds the inner element and a locking bolt that cooperates with a hole or notch in the outer element, the bolt being inside the outer element. The adjustment position is slidably mounted and coupled to the internal element by a pin that pivots the pin between the position for actuating the bolt and the position for separating the bolt locked into the adjustment position. Guide slide for a vehicle seat or the like, which is axially displaceable with respect to these two members so as to allow a temporary relative displacement of the inner and outer elements to and from the adjusted position. Locking device.

In the device, the bolt serves as a member to secure the two elements of the slide to each other and as a memory to allow the selected adjustment position to be repositioned after a temporary displacement of the seat forward. Works on both sides. The device thus comprises a very small number of parts and is furthermore completely contained inside the slide.

According to a preferred embodiment, the actuating pin has a non-circular cross section complementary to the bore of the bolt and is inscribed inside the circular cross section of the passageway through the inner element.

Furthermore, the pin which causes the pivoting of the bolt is elastically pushed back towards the bolt and is coupled to a device which causes its rotation and axial displacement.

The following description of embodiments, given by way of non-limiting example and shown in the accompanying drawings, will more clearly illustrate the advantages and features of the present invention.

EXAMPLE The guiding slide of a vehicle seat shown in FIG. 1 comprises, in the usual manner, said external element which cooperates with internal element 2 so as to allow a relative axial displacement of the external element of approximately U shape. ing.

In the embodiment shown, the arms 3,4 of the outer element 1 are curved at their ends so as to respectively define two longitudinal inner grooves 5,6 which open towards each other. Similarly, the inner element 2 receives the grooves 5, 6 of the outer element 1 to accommodate the ball 10.
It has external side walls which are curved so as to respectively form longitudinal external grooves 7, 8 which co-operate therewith.

One of these elements, for example the outer element 1, is fixed to the floor of the vehicle, while the other one of the inner elements 2 is integral with the seat of the vehicle. In this latter case, the inner element 2 is
It preferably has a tubular cross section and is made directly by the deformation of the base reinforcement tube of the seat.

The outer element 1 further has two opposing slots 11, 12 on its two opposing side walls 3, 4 respectively, and a locking member 14 is slidably mounted in the slots 11, 12.

The locking member or bolt 14 tapers from one end to the other and has at its narrowest end a side tooth 16 cooperating with a notch or hole 18 (FIG. 2) formed in the wall 4 of the outer element 1. An elongate element with a flat overall shape. bolt
14 is a flat main part 24 due to the inclined ramp 22
Has bosses 20 which are joined to the teeth 16 at right angles to these teeth 16. Also, a second boss 26, which is higher than the boss 20, is provided at the opposite end of the bolt 14, but the inclined portion projecting to the opposite side of the bolt and joining the flat portion 24 has a hole 28. (Fig. 6).

The hole 28 in the locking member 14 is defined by two opposing flat surfaces 29 separated by two cylindrical surface portions 30 as shown in detail in FIG. An end of an actuating pin 32 having a cross section complementary to the shape of the hole 28 is engaged with the hole.

The pin 32 not only penetrates the bolt 14 but also the inner element 2
Long enough to also penetrate through, and is guided inside the element 2 by a mounted bushing, or preferably by flow drilling, by a circular cross-section bearing formed in the tube 2.

The pin 32 has a collar 36 on the outside of the inner element 2 against which one end of a spiral spring 38 abuts, the other end of which is pressed against a fixing member of a seat not shown in order not to complicate the drawing. It

Similarly, the pin 32 is connected at its opposite end to the bolt 14 to an operating device which may be of any suitable type and is not shown for this reason.

The operating device comprises a member which allows the pin 32 to be swiveled around itself and thus the bolt 14 inside the outer element 1. Therefore, during this pivoting movement, the bolt 14 has teeth 16 with holes 18 in the outer element 1.
The tooth 16 is released from the hole 18 from the locking position shown in FIG. 2 in which the locking member 14 is slidably slid inside the outer element 1 as shown in FIG. Move to position.

Rotation of the pin 32 does not change the position of the inner element 2, because the cross-section of the pin 32 is inscribed inside the circular cross-section of the passage defined by the bearing 34. On the other hand, since the bolt 14 is released, the seat integral with the inner element 2 can be pressed so as to cause the inner element to slide on the ball 10 inside the outer element 1. This translational displacement causes movement of the pin 32 as well as the bolt 14 sliding inside the outer element 1. Therefore, the entire locking device moves with the seat until it reaches the desired adjustment position. At this point, the pivoting of the pin 32 in the opposite direction is to the locking position, i.e. by means of the teeth 16 in the bore 18 as shown in FIG.
Re-install.

Therefore, the seat user can move the seat with respect to the dash board and position the seat at the most comfortable distance for the user.

Further, the device for operating the pin 32 includes a bolt 14 and a bearing 34.
The device has a device for axially displacing the pin.
This axial displacement allows the end of the pin 32 to be released from the hole 28 in the bolt 14 and thus separate the two members. At this point, the translational movement of the seat and the inner element 2 causes the pin 32 to move as described above, but does not affect the bolt 14, which is in the locking position, i.e. previously selected by the user. It remains in its adjusted position.

The seat, i.e. the inner element 2, can thus be pressed against the front end of the slide so as to open up the maximum space for the rearward proximity without the bolt 14 being displaced. On the other hand, this proximity space is no longer needed anymore, and the pin is pushed back by the spring 38 when the seat is pushed backwards close to the bolt 14.
32 penetrates the void defined by boss 20 and bolts
It comes into contact with the lamp 22 of 14, and the lamp 22 is connected to the pin 32.
And center the pin 32 with respect to the bolt. Continuing to move, the pin 32 slides over the central portion 24 of the bolt 14, then reaches the boss 26 and stops. Then pin 32
Is acted on by spring 38 into hole 28 and bolt 14
Re-occupy its position to engage the inner element 2 with the bolt 14
To the longitudinal direction. Since the bolt 14 is left in the adjusted position selected by the user, the seat will automatically return to this adjusted position without user intervention.

The bolt 14 thus acts as a memory which allows the previous adjustment position to be reliably and automatically repositioned.

By using the same member for two functions in this way and installing it inside the slide, the device has a limited size which effectively guarantees both locking and repositioning of the adjustment position. And with a very small number of parts.

Of course, the slide may be arranged vertically as shown in FIG. 1 or vice versa horizontally, and a spring or other recalling member preferably causes the bolt 14 to automatically lock its locking position. Return to.

Similarly, it is clearly recognized that the inner element may be a fixed element, while the outer element may be fixed to a vehicle seat, without changing the design or operation of the device.

[Brief description of drawings]

1 is a cross-sectional view of a slide equipped with the locking device of the present invention in a vertical plane passing through an operating pin, FIG. 2, FIG.
FIG. 4 is a schematic cross-sectional view taken along line 2-2 of FIG. 1 showing the lock members in three different positions, and FIG. 5 is the lock device and slide of FIG. 1 in a temporarily displaced position. Line 5-
5 is a schematic cross-sectional view taken along line 5, and FIG. 6 shows a cross-sectional view of the bolt taken along line 6-6 in FIG. 1 ... External element, 2 ... Internal element, 14 ... Bolt (lock member), 16 ... Side teeth, 18 ... Notch (hole), 20 ...
Boss, 26 …… Second boss, 28 …… Hole, 32 …… Operating pin,
34 ... Bearing.

Claims (7)

[Claims] 1. A generally U-shaped outer element (1) at least partially surrounding the inner element (2) and a locking bolt (14) cooperating with a hole or notch (18) in the outer element (1). )
In a locking device for guiding slides for vehicle seats, etc., the bolt (14) is slidably mounted inside the external element (1), and a pin (3
2) connected to the internal element (2) by means of which the pin is moved from the adjusted position to the adjusted position between a pivoted position of the bolt and a position separating the bolt locked in the adjusted position. A locking device, characterized in that it is axially displaceable with respect to these two members so as to allow a temporary relative displacement of said inner and outer elements towards each other. 2. The locking device according to claim 1, wherein the operating pin (32) is the bolt (14).
A locking device having a non-circular cross section complementary to the hole (28) of the above, and is provided inside the circular cross section of the passage (34) through which the internal element (2) penetrates. 3. The locking device according to claim 1 or 2, wherein the operating pin (32) is elastically pushed back toward the bolt (14). Lock device. 4. A locking device according to any one of claims 1 to 3, wherein the bolt (14) has a laterally projecting tooth (16) at one end thereof. )
And a hole (2
8) A locking device, which is a substantially flat elongated member including 5. A locking device according to claim 4, wherein the bolt (14) is between the hole (28) and its end edge remote from the tooth (16). The boss (2) forming a shoulder for stopping the translational movement of the operating pin (32).
A locking device having 6). 6. A locking device according to claim 5, wherein the bolt guides the boss (20) in the opposite direction to the stopping shoulder (26) and the operating pin (32). A locking device, which is formed adjacent to the teeth (16). 7. A locking device according to any one of claims 1 to 6, wherein the bolt (14) is elastically recalled toward the locking position. Lock device